The principal male sex hormone is A. FSH. B. testosterone. C. estrogen. D. insulin.

The apterous gene in Drosophila encodes a protein required for wing patterning and growth. It is also known to function in nerve development, fertility, and viability.

Plant and animal cells both have

What makes the trash in this landfill more of an environmental blight than the trash found in other trash dump areas? A) It is bigger. B) It is smellier. C) It won't disappear. D) It is harder to see.

Light travels from the sun to the earth, a distance of 144,000,000,000 meters, in 480 seconds. Calculate the approximate velocity of light in the direction it travels toward the earth.

In an experiment, a scientist studied the effect of increased levels of calcium had on a sugar levels in the blood. The scientists changed the calcium levels in people's blood and them measured their blood sugar levels.

While collecting samples of rocks, a scientist collects several that contain fossils. What is most likely the type of rock in the scientists sample? a. Metamorphic Rock b. Igneous Rock c. Sedimentary Rock d. Mineral Rock

What type of model uses molded clay, soil, and chemicals to simulate a volcanic eruption?

What type of mountains form at convergent boundaries where two oceanic plates meet?

What are the end products of cellular respiration?

Oxidative phosphorylation generates atp producing adp which catalyzes the phosphorylation of